Parc de l'Alba: first injection of landfill gas into the distribution network
In Parc de l’Alba, Naturgy Group and Nedgia recently achieved a pioneering breakthrough in Spain’s energy transition with the first injection of landfill biomethane into the gas distribution network. This new energy vector should make a significant contribution towards decarbonising the country's energy system.

Within the framework of the circular economy, this achievement is an important step forward in a project that aims to take advantage of the biogas produced in an excavation (called Elena and located in the Parc de l'Alba) resulting from a former clay extraction activity, which was used to store waste bales from Barcelona Metropolitan Area waste recovery plants, between 2007 and 2011.

For this purpose, the Elena Renewable Gas Plant was started up earlier this year, a facility that represents an investment of €2.2 million and is composed of an upgrading plant to filter the biogas and collect its methane (called biomethane), and of an injection plant to introduce it into the natural gas grid present in the Park. The upgrading plant uses membrane separation technologies, an upgrading system that consists of the physical separation of CO2 and CH4 molecules based on their different size.

The company points out that this Parc de l'Alba facility will be able to inject 12 GWh/year of biomethane into the gas distribution network, equivalent to the consumption of 3,200 homes with natural gas, and will avoid the emission into the atmosphere of 2,400 tons of CO2/year, equivalent to planting about 5,000 trees.

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